China Mechanical Engineering ›› 2021, Vol. 32 ›› Issue (16): 1912-1920.

### Collaborative Design Optimization of Damping Layers and Stiffener Layout of Thin-walled Stiffened Plate Structures for Dynamics Performances

NIU Bin1;YAN Jiaming1;MAO Yuming2;LIU Haiyang1

1. 1.School of Mechanical Engineering,Dalian University of Technology,Dalian,Liaoning,116024
2.Shanghai Institute of Aerospace Systems Engineering,Shanghai,201109
• Online:2021-08-25 Published:2021-09-10

### 面向动力学性能的薄壁加筋板结构阻尼与筋条布局协同优化设计

1. 1.大连理工大学机械工程学院，大连,116024
2.上海宇航系统工程研究所，上海,201109
• 作者简介:牛斌，男，1981年生，教授。研究方向为材料结构功能一体化设计制造、结构拓扑优化。发表论文40余篇。E-mail:niubin@dlut.edu.cn。
• 基金资助:
国家自然科学基金（51975087）

Abstract: In order to reduce the vibrations of thin-walled stiffened plate structures in dynamic environment, a topology optimization method was proposed for designing the layout of reinforced ribs and damping layers. The penalization model of damping material and the ground structure approach were combined in the optimization. The density of stiffened rib and element density of the damping material were introduced as the independent design variables. Two constraints on the material used in the stiffened ribs and the damping layers were considered. The collaborative design optimization of damping layers and stiffening ribs was established with dynamic compliance as the objective function. The optimized topological design of stiffeners and damping materials was realized simultaneously. Several numerical examples of stiffened plate with different damping properties and various excitation frequencies were given to verify the effectiveness of the proposed method.

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